"We basically managed to track a TV going from the UK allegedly as second-hand equipment to Nigeria," Iza Kruszewskahe, from the environmental group, told the BBC's Focus on Africa programme.

"When in fact we knew, because we gutted it, this TV, before it left the UK, we took all the insides out and put [in] a tracker device, which enabled us to track this old TV from the UK, through the recycler, etc to Nigeria."

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.